1

VABCD is a pyramid with a square base ABCD of side $12$ cm. The apex V is directly above the centre X of the base. Each slant edge (such as VC) is $22$ cm. Work out the volume of the pyramid. Give your answer correct to 3 significant figures. [4]

2

The diagram shows a frustum formed by removing a small cone from a larger cone. The larger cone has base radius $9$ cm and slant height $15$ cm. The frustum has a top radius of $6$ cm. Work out the total surface area of the frustum. Give your answer correct to 3 significant figures. (Curved surface area of a cone $= \pi r l$, where $l$ is the slant height.) [4]